WO1998009928A3 - Alkylation process using zeolite beta - Google Patents
Alkylation process using zeolite beta Download PDFInfo
- Publication number
- WO1998009928A3 WO1998009928A3 PCT/US1997/015684 US9715684W WO9809928A3 WO 1998009928 A3 WO1998009928 A3 WO 1998009928A3 US 9715684 W US9715684 W US 9715684W WO 9809928 A3 WO9809928 A3 WO 9809928A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zeolite beta
- alkylation process
- aromatic
- treated
- remove
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G29/00—Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
- C10G29/20—Organic compounds not containing metal atoms
- C10G29/205—Organic compounds not containing metal atoms by reaction with hydrocarbons added to the hydrocarbon oil
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/02—Monocyclic hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/02—Monocyclic hydrocarbons
- C07C15/067—C8H10 hydrocarbons
- C07C15/073—Ethylbenzene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
- C07C2/54—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition of unsaturated hydrocarbons to saturated hydrocarbons or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring
- C07C2/64—Addition to a carbon atom of a six-membered aromatic ring
- C07C2/66—Catalytic processes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2529/00—Catalysts comprising molecular sieves
- C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
- C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- C07C2529/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/06—Reactor-distillation
Abstract
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002264700A CA2264700C (en) | 1996-09-06 | 1997-09-05 | Alkylation process using zeolite beta |
EP97940865A EP0929502B1 (en) | 1996-09-06 | 1997-09-05 | Alkylation process using zeolite beta |
AU42547/97A AU743095B2 (en) | 1996-09-06 | 1997-09-05 | Alkylation process using zeolite beta |
DE69705958T DE69705958T2 (en) | 1996-09-06 | 1997-09-05 | ALKYLATION PROCEDURE USING ZEOLITE BETA |
JP51294498A JP4275739B2 (en) | 1996-09-06 | 1997-09-05 | Alkylation method using zeolite β |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2557796P | 1996-09-06 | 1996-09-06 | |
US60/025,577 | 1996-09-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998009928A2 WO1998009928A2 (en) | 1998-03-12 |
WO1998009928A3 true WO1998009928A3 (en) | 1999-04-15 |
Family
ID=21826869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/015684 WO1998009928A2 (en) | 1996-09-06 | 1997-09-05 | Alkylation process using zeolite beta |
Country Status (9)
Country | Link |
---|---|
US (1) | US6002057A (en) |
EP (1) | EP0929502B1 (en) |
JP (1) | JP4275739B2 (en) |
CN (1) | CN1088050C (en) |
AU (1) | AU743095B2 (en) |
CA (1) | CA2264700C (en) |
DE (1) | DE69705958T2 (en) |
ES (1) | ES2162327T3 (en) |
WO (1) | WO1998009928A2 (en) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5894076A (en) * | 1997-05-12 | 1999-04-13 | Catalytic Distillation Technologies | Process for alkylation of benzene |
US5880320A (en) | 1997-08-05 | 1999-03-09 | Netzer; David | Combination process for manufacturing ethylene ethylbenzene and styrene |
IT1299035B1 (en) * | 1998-04-07 | 2000-02-07 | Enichem Spa | PROCESS FOR THE PREPARATION OF MONOALKYLATED AROMATIC COMPOUNDS |
US6252126B1 (en) | 1998-06-19 | 2001-06-26 | David Netzer | Method for producing ethylbenzene |
US5977423A (en) * | 1998-06-19 | 1999-11-02 | Netzer; David | Mixed phase ethylation process for producing ethylbenzene |
US6783659B2 (en) * | 2001-11-16 | 2004-08-31 | Chevron Phillips Chemical Company, L.P. | Process to produce a dilute ethylene stream and a dilute propylene stream |
EP1507838B1 (en) * | 2001-11-16 | 2011-09-14 | Chevron Phillips Chemical Company Lp | A process to produce a dilute ethylene stream and a dilute propylene stream |
US6878327B2 (en) * | 2002-04-19 | 2005-04-12 | Fina Technology, Inc. | Process of making polypropylene fibers |
AU2003247572A1 (en) | 2002-06-19 | 2004-01-06 | Exxonmobil Chemical Patents Inc. | Manufacture of xylenes from reformate |
WO2004000768A1 (en) * | 2002-06-19 | 2003-12-31 | Exxonmobil Chemical Patents Inc. | Manufacture of xylenes by reactive distillation of reformate |
US7119239B2 (en) | 2002-06-19 | 2006-10-10 | Exxonmobil Chemical Patents Inc. | Manufacture of xylenes using reformate |
EP1479663A1 (en) * | 2003-05-17 | 2004-11-24 | Haldor Topsoe A/S | Process for catalytic alkylation of monocyclic aromatic compounds and composition of use therein |
US7071369B2 (en) * | 2003-06-10 | 2006-07-04 | Abb Lummus Global Inc. | Process for the production of alkylbenzene with ethane stripping |
US20040254414A1 (en) | 2003-06-11 | 2004-12-16 | Hildreth James M. | Process for production of propylene and ethylbenzene from dilute ethylene streams |
US7259282B2 (en) * | 2003-09-08 | 2007-08-21 | Abb Lummus Global Inc. | Process for production of ethylbenzene from dilute ethylene streams |
WO2005122242A1 (en) * | 2004-06-07 | 2005-12-22 | Nikon Corporation | Stage apparatus, exposure apparatus, and exposure method |
TWI376361B (en) * | 2004-08-13 | 2012-11-11 | Exxonmobil Chem Patents Inc | Process for producing phenol and methyl ethyl ketone |
US7348465B2 (en) * | 2005-02-08 | 2008-03-25 | Shell Oil Company | Selective alkylation of aromatic hydrocarbons |
US7488861B2 (en) * | 2005-03-17 | 2009-02-10 | Catalytic Distillation Technologies | Process for the co-production of cumene and secondary butyl benzene |
US20060247479A1 (en) * | 2005-04-29 | 2006-11-02 | Nova Chemicals Inc. | Ethyl benzene from refinery grade feedstocks |
US7326815B2 (en) * | 2005-12-27 | 2008-02-05 | Exxonmobil Chemical Patents Inc. | Selective oxidation of alkylbenzenes |
WO2007081781A2 (en) * | 2006-01-07 | 2007-07-19 | Fina Technology, Inc. | Dilute liquid phase alkylation |
US20080058566A1 (en) * | 2006-09-05 | 2008-03-06 | Fina Technology, Inc. | Processes for reduction of alkylation catalyst deactivation utilizing low silica to alumina ratio catalyst |
US9375706B2 (en) | 2006-09-05 | 2016-06-28 | Fina Technology, Inc. | Use of swing preliminary alkylation reactors |
DE602008005752D1 (en) * | 2007-08-22 | 2011-05-05 | Exxonmobil Chem Patents Inc | PROCESS FOR THE PREPARATION OF SEC.-BUTYL BENZENE |
EP2098498A1 (en) | 2008-03-04 | 2009-09-09 | ExxonMobil Chemical Patents Inc. | Selective oligomerization of isobutene |
EP2110368A1 (en) | 2008-04-18 | 2009-10-21 | Total Petrochemicals France | Alkylation of aromatic substrates and transalkylation process |
EP2344436A1 (en) * | 2008-08-26 | 2011-07-20 | ExxonMobil Chemical Patents Inc. | Process for producing alkylbenzene hydroperoxides |
US8865958B2 (en) * | 2008-09-30 | 2014-10-21 | Fina Technology, Inc. | Process for ethylbenzene production |
CN102177110A (en) * | 2008-10-10 | 2011-09-07 | 埃克森美孚化学专利公司 | Process for producing sec-butylbenzene |
CN102177126A (en) | 2008-10-10 | 2011-09-07 | 埃克森美孚化学专利公司 | Process for producing phenol and methyl ethyl ketone |
CN104529853A (en) | 2008-12-15 | 2015-04-22 | 埃克森美孚化学专利公司 | Oxidation of alkylaromatic compounds |
US8455383B2 (en) * | 2009-09-28 | 2013-06-04 | Fina Technology, Inc. | Process for catalyst regeneration and extended use |
RU2505515C1 (en) * | 2010-06-11 | 2014-01-27 | Юоп Ллк | Method and device for reduction of benzol content in benzine in alkylation with diluted ethylene |
EP3313962A1 (en) | 2015-06-29 | 2018-05-02 | SABIC Global Technologies B.V. | Process for producing cumene and/or ethylbenzene from a mixed hydrocarbon feedstream |
WO2017042088A1 (en) * | 2015-09-07 | 2017-03-16 | Sabic Global Technologies B.V. | Process for producing cumene and/or sec-butylbenzene using a mixed olefins stream as alkylation agent |
CN111450662B (en) * | 2020-05-29 | 2022-08-02 | 山东京博石油化工有限公司 | Method and device for purifying raw material dry gas for preparing ethylbenzene |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4891458A (en) * | 1987-12-17 | 1990-01-02 | Innes Robert A | Liquid phase alkylation or transalkylation process using zeolite beta |
FR2689501A1 (en) * | 1992-04-01 | 1993-10-08 | Atochem Elf Sa | Process for the manufacture of ethylbenzene |
US5602290A (en) * | 1995-05-30 | 1997-02-11 | Raytheon Engineers & Constructors, Inc. | Pretreatment of dilute ethylene feedstocks for ethylbenzene production |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US28341A (en) * | 1860-05-22 | Improvement in apparatus for condensing coal-oil | ||
GB1080586A (en) * | 1964-04-23 | 1967-08-23 | Mitsubishi Petrochemical Co | Process for producing high purity benzene |
USRE28341E (en) | 1964-05-01 | 1975-02-18 | Marshall dann | |
US3308069A (en) * | 1964-05-01 | 1967-03-07 | Mobil Oil Corp | Catalytic composition of a crystalline zeolite |
GR66589B (en) * | 1978-06-22 | 1981-03-30 | Snam Progetti | |
US4302356A (en) * | 1978-07-27 | 1981-11-24 | Chemical Research & Licensing Co. | Process for separating isobutene from C4 streams |
US4215011A (en) * | 1979-02-21 | 1980-07-29 | Chemical Research And Licensing Company | Catalyst system for separating isobutene from C4 streams |
EP0055046B1 (en) * | 1980-12-19 | 1984-11-07 | Imperial Chemical Industries Plc | Zeolites |
CA1182796A (en) * | 1981-04-02 | 1985-02-19 | Charles J. Plank | Highly siliceous porous crystalline material, method of preparing same and catalytic conversion therewith |
US4443559A (en) * | 1981-09-30 | 1984-04-17 | Chemical Research & Licensing Company | Catalytic distillation structure |
NZ204091A (en) * | 1982-05-18 | 1986-03-14 | Mobil Oil Corp | Manufacture of synthetic crystalling zeolite beta with a low aluminium content |
US4440871A (en) * | 1982-07-26 | 1984-04-03 | Union Carbide Corporation | Crystalline silicoaluminophosphates |
US4508837A (en) * | 1982-09-28 | 1985-04-02 | Chevron Research Company | Zeolite SSZ-16 |
EP0159846B1 (en) * | 1984-04-16 | 1989-07-19 | Mobil Oil Corporation | Preparation of zeolite beta |
US4554145A (en) * | 1984-04-16 | 1985-11-19 | Mobil Oil Corporation | Preparation of crystalline silicate zeolite Beta |
AU572991B2 (en) * | 1984-06-11 | 1988-05-19 | Mobil Oil Corp. | 30-70 per cent crystalline zeolite beta |
US5081323A (en) * | 1987-12-17 | 1992-01-14 | Chevron Research And Technology Company | Liquid phase alkylation or transalkylation process using zeolite beta |
US5082990A (en) * | 1988-10-28 | 1992-01-21 | Chevron Research And Technology Company | Alkylation of aromatics-containing refinery streams |
IT1237198B (en) * | 1989-11-16 | 1993-05-26 | Eniricerche Spa | PROCESS FOR THE ALKYLATION OF AROMATIC COMPOUNDS. |
US5454913A (en) * | 1990-02-06 | 1995-10-03 | Koch Engineering Company, Inc. | Internals for distillation columns including those for use in catalytic reactions |
ATE122908T1 (en) * | 1990-03-30 | 1995-06-15 | Koch Eng Co Inc | STRUCTURE AND METHOD FOR THE CATALYTIC REACTION OF FLUID STREAMS IN A MATERIAL EXCHANGE APPARATUS. |
EP0467007B1 (en) * | 1990-07-18 | 1996-04-17 | Fina Technology, Inc. | Transalkylation process |
US5118896A (en) * | 1990-10-31 | 1992-06-02 | Amoco Corporation | Aromatic alkylation process using large macropore, small particle size, zeolite catalyst |
NO174341B1 (en) * | 1991-12-23 | 1994-04-21 | Polymers Holding As | Prepare foremost crystalline microporosis SiAl phosphates with controlled Si content, crystalline microporosis SiAl phosphates with improved stability against deactivation and use thereof in the preparation of olefins from methanol |
EP0571701A1 (en) * | 1992-05-20 | 1993-12-01 | Fina Research S.A. | Process for the alkylation of aromatics |
US5273644A (en) * | 1992-10-13 | 1993-12-28 | Uop | Integrated reforming and alkylation process for low benzene reformate |
IT1264626B1 (en) * | 1993-06-16 | 1996-10-04 | Eniricerche Spa | PROCESS FOR THE PREPARATION OF CUMENE |
-
1997
- 1997-09-05 AU AU42547/97A patent/AU743095B2/en not_active Ceased
- 1997-09-05 ES ES97940865T patent/ES2162327T3/en not_active Expired - Lifetime
- 1997-09-05 DE DE69705958T patent/DE69705958T2/en not_active Expired - Lifetime
- 1997-09-05 US US08/925,812 patent/US6002057A/en not_active Expired - Lifetime
- 1997-09-05 JP JP51294498A patent/JP4275739B2/en not_active Expired - Lifetime
- 1997-09-05 WO PCT/US1997/015684 patent/WO1998009928A2/en active IP Right Grant
- 1997-09-05 CN CN97198573A patent/CN1088050C/en not_active Expired - Lifetime
- 1997-09-05 CA CA002264700A patent/CA2264700C/en not_active Expired - Lifetime
- 1997-09-05 EP EP97940865A patent/EP0929502B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4891458A (en) * | 1987-12-17 | 1990-01-02 | Innes Robert A | Liquid phase alkylation or transalkylation process using zeolite beta |
FR2689501A1 (en) * | 1992-04-01 | 1993-10-08 | Atochem Elf Sa | Process for the manufacture of ethylbenzene |
US5602290A (en) * | 1995-05-30 | 1997-02-11 | Raytheon Engineers & Constructors, Inc. | Pretreatment of dilute ethylene feedstocks for ethylbenzene production |
Also Published As
Publication number | Publication date |
---|---|
JP2001503025A (en) | 2001-03-06 |
CN1088050C (en) | 2002-07-24 |
CA2264700A1 (en) | 1998-03-12 |
CA2264700C (en) | 2006-11-21 |
DE69705958T2 (en) | 2002-04-04 |
CN1239471A (en) | 1999-12-22 |
AU743095B2 (en) | 2002-01-17 |
EP0929502B1 (en) | 2001-08-01 |
US6002057A (en) | 1999-12-14 |
AU4254797A (en) | 1998-03-26 |
JP4275739B2 (en) | 2009-06-10 |
WO1998009928A2 (en) | 1998-03-12 |
EP0929502A2 (en) | 1999-07-21 |
ES2162327T3 (en) | 2001-12-16 |
DE69705958D1 (en) | 2001-09-06 |
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